RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7588 Comm: syz-executor157 Not tainted 4.19.34 #2 ====================================================== WARNING: possible circular locking dependency detected 4.19.34 #2 Not tainted ------------------------------------------------------ syz-executor157/7587 is trying to acquire lock: 00000000a9fa66c1 (console_owner){-...}, at: console_trylock_spinning kernel/printk/printk.c:1662 [inline] 00000000a9fa66c1 (console_owner){-...}, at: vprintk_emit+0x348/0x690 kernel/printk/printk.c:1926 but task is already holding lock: 000000002394c496 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xff/0x200 drivers/tty/pty.c:119 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&(&port->lock)->rlock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152 tty_port_tty_get+0x22/0x80 drivers/tty/tty_port.c:288 tty_port_default_wakeup+0x16/0x40 drivers/tty/tty_port.c:47 tty_port_tty_wakeup+0x5d/0x70 drivers/tty/tty_port.c:390 uart_write_wakeup+0x46/0x70 drivers/tty/serial/serial_core.c:103 serial8250_tx_chars+0x4a4/0xb20 drivers/tty/serial/8250/8250_port.c:1806 serial8250_handle_irq.part.0+0x1e2/0x270 drivers/tty/serial/8250/8250_port.c:1879 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1865 [inline] serial8250_default_handle_irq+0xc5/0x150 drivers/tty/serial/8250/8250_port.c:1895 serial8250_interrupt+0x102/0x1e0 drivers/tty/serial/8250/8250_core.c:125 __handle_irq_event_percpu+0x146/0x900 kernel/irq/handle.c:149 handle_irq_event_percpu+0x74/0x160 kernel/irq/handle.c:189 handle_irq_event+0xa7/0x134 kernel/irq/handle.c:206 handle_edge_irq+0x264/0x8e0 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:155 [inline] handle_irq+0x252/0x3d8 arch/x86/kernel/irq_64.c:78 do_IRQ+0x99/0x1d0 arch/x86/kernel/irq.c:246 ret_from_intr+0x0/0x1e arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0x95/0xe0 kernel/locking/spinlock.c:184 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline] uart_write+0x3a9/0x6f0 drivers/tty/serial/serial_core.c:615 process_output_block drivers/tty/n_tty.c:593 [inline] n_tty_write+0x3ff/0x1100 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x45b/0x7a0 drivers/tty/tty_io.c:1042 redirected_tty_write+0xb2/0xc0 drivers/tty/tty_io.c:1063 __vfs_write+0x116/0x820 fs/read_write.c:485 vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0xea/0x1f0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&port_lock_key){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152 serial8250_console_write+0x7ed/0xa10 drivers/tty/serial/8250/8250_port.c:3247 univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:590 call_console_drivers kernel/printk/printk.c:1729 [inline] console_unlock+0xbbe/0x1080 kernel/printk/printk.c:2410 vprintk_emit+0x238/0x690 kernel/printk/printk.c:1927 vprintk_default+0x28/0x30 kernel/printk/printk.c:1968 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2001 register_console+0x787/0xb90 kernel/printk/printk.c:2725 univ8250_console_init+0x3e/0x4b drivers/tty/serial/8250/8250_core.c:685 console_init+0x4f7/0x761 kernel/printk/printk.c:2811 start_kernel+0x59f/0x8c8 init/main.c:661 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:451 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 -> #0 (console_owner){-...}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 console_trylock_spinning kernel/printk/printk.c:1683 [inline] vprintk_emit+0x385/0x690 kernel/printk/printk.c:1926 vprintk_default+0x28/0x30 kernel/printk/printk.c:1968 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2001 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x6f1/0x85c lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: console_owner --> &port_lock_key --> &(&port->lock)->rlock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&(&port->lock)->rlock); lock(&port_lock_key); lock(&(&port->lock)->rlock); lock(console_owner); *** DEADLOCK *** 4 locks held by syz-executor157/7587: #0: 000000008b9fa4f5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000a1f57881 (&o_tty->termios_rwsem/1){++++}, at: n_tty_receive_buf_common+0x89/0x2900 drivers/tty/n_tty.c:1703 #2: 00000000f4ef20cd (&ldata->output_lock){+.+.}, at: flush_echoes drivers/tty/n_tty.c:825 [inline] #2: 00000000f4ef20cd (&ldata->output_lock){+.+.}, at: __receive_buf drivers/tty/n_tty.c:1646 [inline] #2: 00000000f4ef20cd (&ldata->output_lock){+.+.}, at: n_tty_receive_buf_common+0xb99/0x2900 drivers/tty/n_tty.c:1740 #3: 000000002394c496 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xff/0x200 drivers/tty/pty.c:119 stack backtrace: CPU: 0 PID: 7587 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x2e6d/0x48f0 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 console_trylock_spinning kernel/printk/printk.c:1683 [inline] vprintk_emit+0x385/0x690 kernel/printk/printk.c:1926 vprintk_default+0x28/0x30 kernel/printk/printk.c:1968 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2001 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x6f1/0x85c lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7586 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7589 Comm: syz-executor157 Not tainted 4.19.34 #2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7591 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7592 Comm: syz-executor157 Not tainted 4.19.34 #2 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7590 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7593 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7595 Comm: syz-executor157 Not tainted 4.19.34 #2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7594 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7596 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7597 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7598 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7599 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7600 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7601 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7602 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7604 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7608 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7605 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7609 Comm: syz-executor157 Not tainted 4.19.34 #2 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7606 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7610 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7611 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7613 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7612 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7614 Comm: syz-executor157 Not tainted 4.19.34 #2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7616 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7615 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7617 Comm: syz-executor157 Not tainted 4.19.34 #2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7618 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7619 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7621 Comm: syz-executor157 Not tainted 4.19.34 #2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7622 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441419 Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7620 Comm: syz-executor157 Not tainted 4.19.34 #2 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 7623 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3078 [inline] prepare_alloc_pages mm/page_alloc.c:4336 [inline] __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4433 tlb_next_batch mm/memory.c:204 [inline] __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1341 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xeee/0x1e70 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3092 __mmput kernel/fork.c:1001 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1022 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440068 Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 7624 Comm: syz-executor157 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:121 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2192 [inline] tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688